【摘要】 为实现电感体积与变换器效率的双重优化，该文基于大功率交错并联Boost变换器，提出一种耦合电感综合建模与多目标优化方法。首先，基于输入电流纹波约束，建立耦合电感电气参数取值的数学模型。其次，优化传统E型耦合电感绕组布局，提出绕组均分的电感设计方案。在此基础上，以耦合电感的关键参数（开关频率、耦合系数以及磁心截面积）为设计变量，建立电感体积和变换器效率的综合模型。以综合模型为基础，通过设计变量的迭代运算，获得效率和电感体积的Pareto前沿，从而为耦合电感的多目标优化提供理论依据。最后，对比制作基于耦合与非耦合电感的20kW实验样机。结果表明，基于耦合电感的实验样机最高效率为98.43%，较非耦合电感提高了0.21%，且耦合以后电感体积下降了32%。更多还原

【Abstract】 This paper proposes a comprehensive modeling and multi-objective optimization method for coupled inductors of high-power interleaved boost converters to realize the dual optimization of inductor volume and converter efficiency. Firstly, based on the constraint on input current ripples, the mathematical model is established for the electrical parameters of coupled inductors.Secondly, the windings layout of a traditional E-type coupled inductor is optimized, and an inductor design scheme with equal windings is proposed. Then, a comprehensive model for inductor volume and converter efficiency is established with key parameters of coupled inductors(switching frequency,coupling coefficient and core cross-sectional area) as design variables. Based on the comprehensive model, Pareto-fronts of efficiency and inductor volume are obtained via iterative operation of design variables, thus providing a theoretical basis for multi-objective optimization of coupled inductors.Finally, a 20kW experimental prototype based on coupled and non-coupled inductors was produced.The results show that the maximum efficiency of the experimental prototype with coupled inductors is 98.43%, which is 0.21% higher than that with uncoupled inductors, and inductor volume decreases by 32% after coupling.更多还原